index: add Slack (no, thank you) as teamchat

index.html

@@ -121,6 +121,8 @@ Another policy I have is keeping my email at 0 unreads, so it has became a way t
 <li><s><a href="https://riot.im/app/#/user/@Ciblia:matrix.org" rel="me">@Ciblia:matrix.org on Riot/Matrix</a></s> <a href="https://riot.im/app/#/user/@mikaela:privacytools.io" rel="me">@mikaela:privacytools.io on Riot/Matrix</a>
 <br/>&nbsp;&nbsp;&nbsp;&nbsp;Riot is, even with <a href="https://gist.github.com/maxidorius/5736fd09c9194b7a6dc03b6b8d7220d0">privacy concerns</a>, the defacto client for the Matrix protocol which is in a friendly competition with XMPP, both of them are federated and wish to <em>bridge</em> everything into themselves. See also <a href="https://matrix.org/docs/projects/try-matrix-now.html">Try Matrix now</a> and <a href="{{site.address}}/keys#matrix">my Matrix fingerprints on my public keys page</a>. However my phone cannot run Riot well, so this is not a good place to attempt contacting me.
 <br/>&nbsp;&nbsp;&nbsp;&nbsp;As a Matrix user you can contact me also through a bridge between Matrix and XMPP on <a href="https://riot.im/app/#/user/@_xmpp_mikaela=40blesmrt.net:matrix.org" rel="me">Matrix.org</a> <em>or you could if it wasn't currently down</em>.</li>
+<li><s>Slack</s></a>
+<br/>&nbsp;&nbsp;&nbsp;&nbsp;No, thank you. Unless I have a contract of employment with you (in which case you would hopefully confirm my identity more strongly), please consider using <a href="https://keybase.io/slack-importer">Keybase's Slack importer</a> or <a href="https://github.com/matrix-org/matrix-appservice-slack">matrix-appservice-slack</a> or <a href="https://www.privacytools.io/software/real-time-communication/#teamchat">check the team chat page of privacytools.io</a> for better ideas.</li>
 </ul>
 
 <h3 id="misc">Misc</h3>